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zdiWushi of team509ZDI-10-030
HistoryMar 16, 2010 - 12:00 a.m.

Apple WebKit CSS run-in Attribute Rendering Remote Code Execution Vulnerability

2010-03-1600:00:00
wushi of team509
www.zerodayinitiative.com
13

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.165 Low

EPSS

Percentile

95.9%

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari and other WebKit based browsers. User interaction is required to exploit this vulnerability in that the target must visit a malicious page. The specific flaw exists in the handling of the run-in value for display CSS styles. A specially crafted web page can cause a use after free() condition in WebKit’s WebCore::RenderBlock() method. This can be further leveraged by attackers to execute arbitrary code under the context of the current user.

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.165 Low

EPSS

Percentile

95.9%